Question

2
Find area of the triangle if its perimeter is 32 cms, if length of its two sides is
8 cms and 11 cms respectively.​

Answer 1

Perimeter of a triangle m=Sum of all sides

Let the third side be x.

32=8+11+x

32=19+x

x=32-19

x=13 cm

Now,you can find area of triangle by using the formula...

Answer 2

Answer:

Given:

* The length of two sides of a triangle are 8 cm and 11 cm respectively.

The perimeter of a triangle = 32 cm

To find:

The area of a triangle=?

Solution:

Let a, b, c be the length of sides of a given triangle,

and 2s be the perimeter of a triangle.

* Perimeter of triangle = a + b +c *

Now,

a + b + c = 2s

8 + 11 + c = 32

19 + c = 32

32 - 19

C = 13 cm

Now, we know it's Semi-perimeter

Semi-perimeter = Perimeter/2

Semi-perimeter = 32/2

Semi-perimeter = 16 cm =

.

Math

5 points e

ill

79

Using Heron's formula,

* Area of Triangle = vs(s - a) (s - b) (s -c)*

Area of Triangle = √16(8) (5 ) ( 3)

> Area of Triangle = √16 8 x 5 x 3

Area of Triangle = √2 x 8 x 8 x 5 x 3

> Area of Triangle = √2 x 8 x 8 x 5 x 3 =

Area of Triangle = 8√2 x 5 x 3

Area of Triangle = 8√30 =

.: The area of Triangle = 8√3

Step-by-step explanation:

Let's understand the concept first! First we will find the third side of triangle by using formula to calculate the perimeter and then semi perimeter because we will find area by using Heron's formula. At last, after finding the third side calculate the area of a triangle Lucina Heron's formula

Let's understand the concept first! First we will find the third side of triangle by using formula to calculate the perimeter and then semi perimeter because we will find area by using Heron's formula. At last, after finding the third side calculate the area of a triangle Lucina Heron's formulaLet's find out...